Clematis...planted next to each other to twine together up the lattice. Use two plants of the same pruning class.
@Fritillaria - Hey look, there's you! You're a hardy bulb to plant in the fall. Good to know.
Learn how to care for and choose Hydrangeas: http://www.bhg.com/gardening/trees-shrubs-vines/shrubs/hydrangea-guide/?socsrc=bhgpin040714guidetohydrangeas
Alternative Gardning: Garden Self-Watering Cones
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Plant a garden full of mosquito repelling plants so you can actually enjoy being outdoors :)
A guide to hardy plants for multiple zones with tips and ideas for a successful perennial garden. by @O N Sutton Place
20 Insanely Clever Gardening Tips And Ideas
31 Plants That Repel Mosquitoes - http://www.hometipsworld.com/31-plants-that-repel-mosquitoes.html
How to Grow Clematis